Product Filter for WooCommerce 9.1.1

+ Product Filter for WooCommerce 6.2.3 - 19. April 2017.
- fixed WooCommerce 3.0.0 variable instock/outofstock filter support

+ Product Filter for WooCommerce 6.2.1, 6.2.2 - 18. April 2017.
- fixed range price filter issues

+ Product Filter for WooCommerce 6.2.0 - 17. April 2017.
- WooCommerce 3.0.0 support
- added support for WooCommerce 3.0.0 instock/outofstock products, now instock filters are super fast on WooCommerce 3.0.0!
- fixed new WooCommerce 3.0.0 products missing from filtering
- fixed catalog/search mode WooCommerce 3.0.0 support
- fixed range price filter failing prices and delimiter issues
- fixed warning prdctfltr/lib/pf-frontend.php on line 698
- fixed order_by_rating_post_clauses and WooCommerce3.0.0 support
- fixed undefined variable: selected prdctfltr/lib/pf-frontend.php on line 2687
- fixed responsive modes and single filter issues
- fixed a few typos in the admin area

- fixed missing icons from admin panel
- fixed max-height option

- fixed 6.0.4 Warning: implode(): Invalid arguments passed in.../wp-content/plugins/prdctfltr/lib/pf-frontend.php on line 568
- fixed back/forward button initial state